Definition: lacking in insight or discernment
Usage: too obtuse to grasp the implications of his behavior; a purblind oligarchy that flatly refused to see that history was condemning it to the dustbin- Jasper Griffin
Similar words: undiscerning
Definition: lacking discernment
Synonyms: visually challenged, visually impaired, sand-blind, near-blind, purblind, dim-sighted
Definition: having greatly reduced vision
Similar words: blind, unsighted
Definition: unable to see
Usage: a person is blind to the extent that he must devise alternative techniques to do efficiently those things he would do with sight if he had normal vision--Kenneth Jernigan